Probability and stats final term

Question 1

Confidence level of 85%

Answer 1

1.44

Question 2

Confidence level of 92%

Answer 2

1.75

Question 3

the border or line between level significance and confidence

Answer 3

critical value

Question 4

The probability that we make the error to reject the Null hypothesis when the Null Hypothesis is true

It is denoted by alpha or x refers to the degreee of significance in which we accept or reject the null hypothesis

Answer 4

Level of Significance

Question 5

degrees of freedom

Answer 5

df

Question 6

Confidence interval

Answer 6

I=x̅±Za/z(σ/√n)

Question 7

Calculated from sample data used to decide

Answer 7

Test Hypothesis

Question 8

T-distribution formula

Answer 8

x̅-M/σ/√n

Question 9

Confidence level of 80%

Answer 9

1.28

Question 10

σ

Answer 10

sigma
population standard deviation

Question 11

E=

Answer 11

E=Za/z(σ/√n)

Question 12

also known as gaussiou distribution, the probability density function of any continuous random variable for any given system

Answer 12

Normal distribution

Question 13

Ha

Answer 13

Alternative Hypothesis

Question 14

upper limit formula

Answer 14

x̅+E

Question 15

n=

Answer 15

sample size

Question 16

A statistical term that represents the range of uncertainty or variability around an estimate or measurement. it quantifies the degree of confidence we can have in the estimate is accuracy

Answer 16

Margin of Error

Question 17

=

Answer 17

Equal to the same as, not changed from, is

Question 18

df formula

Answer 18

n-1

Question 19

Confidence level of 96%

Answer 19

2.05

Question 20

A ???l is the mean of your estimate plus and minus the variation in the estimate

Answer 20

Confidence Interval

Question 21

Alternative Hypothesis

Answer 21

Ha

Question 22

Ho

Answer 22

Null Hypothesis

Question 23

Null Hypothesis

Answer 23

Ho

Question 24

When the given statistics hypothesis assumes less than or greater than value, it is called ???

Answer 24

One Tailed Test

Question 25

>

Answer 25

greater than, above, higher than, longer than, bigger than, increased

Question 26

Confidence level of 70%

Answer 26

1.04

Question 27

Margin of Error formula

Answer 27

Za/z(σ/√n)

Question 28

Za/z

Answer 28

confidence coefficient

Question 29

Rejecting the Null Hypothesis when it is true (α)alpha

Answer 29

Type 1 error

Question 30

When the alternative hypothesis is two side like ha M≠Mo, it is called ???

Answer 30

Two Tailed Test

Question 31

Confidence level of 98%

Answer 31

2.33

Question 32

Ha Also known as research Hypothesis, I involves the claim to be tested

Answer 32

Alternative Hypothesis

Question 33

Ho Currently accepted value for a parameter

Answer 33

Null Hypothesis

Question 34

A determination made by an analyst that the results in data are not explainable by chance alone

Answer 34

Statistically significance

Question 35

Confidence level of 95%

Answer 35

1.96

Question 36

is a belt shaped and uni modal it is asymmetric about t=0. however, its variants is greater than 1. The ??? is used with small samples, taken from population that is approximately normal

Answer 36

T-Distribution

Question 37

A premise or claim that we want to test

Answer 37

Hypothesis

Question 38

not rejecting the null hypothesis when it is false (β)beta

Answer 38

Type 2 error

Question 39

<

Answer 39

less than, below lower than, smaller than, decreased or reduce

Question 40

Possibe outcome of this test

Answer 40

*Reject Null Hypothesis(Ha) *Fail to reject Null Hypothesis(Ho)

Question 41

df

Answer 41

degrees of freedom

Question 42

lower limit formula

Answer 42

x̅-E

Question 43

Confidence level of 90%

Answer 43

1.645

Question 44

Is the range values likely include the parameter of the same confidence level

Answer 44

Confidence Interval

Question 45

≠

Answer 45

not equal, different from, changed from, not the same as

Question 46

Confidence level of 99%

Answer 46

2.58